Frequency converter for an antenna



FIG. 1 is a top plan view of a frequency converter for an antenna showing my new design, the bottom plan view being a mirror image thereof;

FIG. 2 is a right side elevational view, the left side elevational view being a mirror image thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof; and

FIG. 5 is a sectional view taken along the line 5--5 of FIG. 3. 

The ornamental design for a frequency converter for an antenna, as shown and described. 